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RKM

RKM INFORMATION This can be expressed by the “Length of yarn in km” at which yarn will break of its own weight”. This is equivalent to breaking load in g/tex. RKM is the short expression for “Reisskilometer” – “Breaking-kilometre”, which is an unit out of date. E.g.: a Cotton-yarn with 15 RKM means, it would break of its own weight, if you wind off 15 km of the yarn and hang it up in 15 km. Nowadays it is common practice, to use the unit Centi-Newton per Tex (cN/Tex) or gram-force per Tex (gf/Tex). RKM and cN/Tex or gf/Tex are practically the same (a slight difference would be there)   SINGLE YARN STRENGTH (Breaking force) :  This is the force required to break a strand of single yarn. It is expressing Centi-Newton (cN).     STRENGTH (Tenacity) : The Tensile Strength expressed as force per unit linear density is called Tenacity. This is normally expressed as gram force per tex (gf/tex).   CSP (Count Strength Product) : CSP, the bundle strength...

HOW TO CALCULATE YARN DIAMETER

HOW TO CALCULATE YARN DIAMETER     The diameter of  yarn can be calculated by 1divded 28 Square root of Count is called as Diameter of yarn in Per inch. Example :-      Count - 20s & 40s Formula:- 1/28 Square root of  Count = Diameter of inch 28Square root of  20 = 125.22 1/125.22 = 0.007986 Per inch 0.007986 x 25.4 = 0.203 So the diameter of yarn is 0.203 Formula:- 1/28 Square root of  Count = Diameter of inch 28Square root of  40 = 177.088 1/177.088 = 0.005647 Per inch 0.005647  x  25.4 = 0.203 So the diameter of yarn is 0.143 Then 1Divded 28 Square root of count why we apply Here?  

Spinning mill Questions Part - 2

1. What is fiber? Ans:  Fiber or fiber is classes of materials that are continuous filaments or are in discrete elongated pieces, similar to lengths of thread. They are very important in the biology of both plants and animals, for holding tissues together. 2. What is textile fiber? Ans:   Textile fiber  has some characteristics which differ between fiber to Textile fiber. Textile fiber can be spun into a yarn or made into a fabric by various methods including weaving, knitting, braiding, felting, and twisting. The essential requirements for fibers to be spun into yarn include a length of at least 5 millimeters, flexibility, cohesiveness, and sufficient strength. Other important properties include elasticity, fineness, uniformity, durability, and luster. 3. What is yarn? Ans:  Yarn is a long continuous length of interlocked fibers, suitable for use in the production of textiles, sewing, crocheting, knitting, weaving, embroidery, and rope making. 4. Flow chart of Carde...